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Reduction of Gd6UO12 for the Synthesis of Gd6UO11
Published online by Cambridge University Press: 12 February 2013
Abstract
In the present work, we focus on δ-Gd6UO12 phase and its stability under reducing conditions. This later point is interesting regarding reducing environment that could exist in some nuclear storage sites and that could possibly degrade δ–compounds. A polycrystalline δ-Gd6UO12 sample was prepared by sintering cubic-Gd2O3 and UO2 mixed powders under an air atmosphere. The resulting pellets were then characterized and reduced by heat treatment under an Ar with H2 5% atmosphere. XRD analysis of the sample after reduction did not confirm the reduction into Gd6UO11 but a decomposition of the δ-compound. Preliminary characterizations of these decomposition products are presented.
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- MRS Online Proceedings Library (OPL) , Volume 1514: Symposium HH – Advances in Materials for Nuclear Energy , 2013 , pp. 151 - 156
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- Copyright © Materials Research Society 2013